<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				color: #fff;
				font-family:Monospace;
				font-size:13px;
				text-align:center;

				background-color: #000;
				margin: 0px;
				overflow: hidden;
			}

			#info {
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
			}
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - Standard Material Variations by <a href="http://clara.io/" target="_blank">Ben Houston</a>.</div>

		<script src="../build/three.js"></script>
		<script src="js/controls/OrbitControls.js"></script>

		<script src="js/Detector.js"></script>
		<script src="js/libs/stats.min.js"></script>

		<script>

			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();

			var container, stats;

			var camera, scene, renderer, controls;
			var particleLight;

			var loader = new THREE.FontLoader();
			loader.load( 'fonts/gentilis_regular.typeface.json', function ( font ) {

				init( font );
				animate();

			} );

			function init( font ) {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2000 );
				camera.position.set( 0.0, 400, 400 * 3.5 );

				//

				var reflectionCube = new THREE.CubeTextureLoader()
					.setPath( 'textures/cube/SwedishRoyalCastle/' )
					.load( [ 'px.jpg', 'nx.jpg', 'py.jpg', 'ny.jpg', 'pz.jpg', 'nz.jpg' ] );
				reflectionCube.format = THREE.RGBFormat;

				scene = new THREE.Scene();
				scene.background = reflectionCube;

				// Materials

				var imgTexture = new THREE.TextureLoader().load( "textures/planets/moon_1024.jpg" );
				imgTexture.wrapS = imgTexture.wrapT = THREE.RepeatWrapping;
				imgTexture.anisotropy = 16;
				imgTexture = null;

				var shininess = 50, specular = 0x333333, bumpScale = 1, shading = THREE.SmoothShading;

				var materials = [];

				var cubeWidth = 400;
				var numberOfSphersPerSide = 5;
				var sphereRadius = ( cubeWidth / numberOfSphersPerSide ) * 0.8 * 0.5;
				var stepSize = 1.0 / numberOfSphersPerSide;

				var geometry = new THREE.SphereBufferGeometry( sphereRadius, 32, 16 );

				for ( var alpha = 0, alphaIndex = 0; alpha <= 1.0; alpha += stepSize, alphaIndex ++ ) {

					for ( var beta = 0; beta <= 1.0; beta += stepSize ) {

						for ( var gamma = 0; gamma <= 1.0; gamma += stepSize ) {

							// basic monochromatic energy preservation
							var diffuseColor = new THREE.Color().setHSL( alpha, 0.5, gamma * 0.5 );

							var material = new THREE.MeshStandardMaterial( {
								map: imgTexture,
								bumpMap: imgTexture,
								bumpScale: bumpScale,
								color: diffuseColor,
								metalness: beta,
								roughness: 1.0 - alpha,
								shading: THREE.SmoothShading,
								envMap: alphaIndex % 2 === 0 ? null : reflectionCube
							} );

							var mesh = new THREE.Mesh( geometry, material );

							mesh.position.x = alpha * 400 - 200;
							mesh.position.y = beta * 400 - 200;
							mesh.position.z = gamma * 400 - 200;

							scene.add( mesh );

						}

					}

				}

				function addLabel( name, location ) {

					var textGeo = new THREE.TextGeometry( name, {

						font: font,

						size: 20,
						height: 1,
						curveSegments: 1

					});

					var textMaterial = new THREE.MeshBasicMaterial( { color: 0xffffff } );
					var textMesh = new THREE.Mesh( textGeo, textMaterial );
					textMesh.position.copy( location );
					scene.add( textMesh );

				}

				addLabel( "+roughness", new THREE.Vector3( -350, 0, 0 ) );
				addLabel( "-roughness", new THREE.Vector3( 350, 0, 0 ) );

				addLabel( "-metalness", new THREE.Vector3( 0, -300, 0 ) );
				addLabel( "+metalness", new THREE.Vector3( 0, 300, 0 ) );

				addLabel( "-diffuse", new THREE.Vector3( 0, 0, -300 ) );
				addLabel( "+diffuse", new THREE.Vector3( 0, 0, 300 ) );

				particleLight = new THREE.Mesh( new THREE.SphereBufferGeometry( 4, 8, 8 ), new THREE.MeshBasicMaterial( { color: 0xffffff } ) );
				scene.add( particleLight );

				// Lights

				scene.add( new THREE.AmbientLight( 0x222222 ) );

				var directionalLight = new THREE.DirectionalLight( 0xffffff, 1 );
				directionalLight.position.set( 1, 1, 1 ).normalize();
				scene.add( directionalLight );

				var pointLight = new THREE.PointLight( 0xffffff, 2, 800 );
				particleLight.add( pointLight );

				//

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				renderer.gammaInput = true;
				renderer.gammaOutput = true;

				//

				stats = new Stats();
				container.appendChild( stats.dom );

				controls = new THREE.OrbitControls( camera );
				controls.target.set( 0, 0, 0 );
				controls.update();

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var timer = Date.now() * 0.00025;

				//camera.position.x = Math.cos( timer ) * 800;
				//camera.position.z = Math.sin( timer ) * 800;

				camera.lookAt( scene.position );

				particleLight.position.x = Math.sin( timer * 7 ) * 300;
				particleLight.position.y = Math.cos( timer * 5 ) * 400;
				particleLight.position.z = Math.cos( timer * 3 ) * 300;

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>
